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Showing posts from January, 2017

7. Sum of Electrical Power Electrical Energy Consumed by a Resistive Load

Three sums of electrical power have been discussed in this video. This is the second part of sum discussion . Sum 1: A water heater has a rating of 4 KVA , 240 V. a) What is the electrical energy consumed by it in: i)KWhr and ii) in Joul. if it is used for 180 minutes. b) Find the cost of electricity if the rate is Rs. 7.00 per commercial unit. + Solution 1 - Close Solution 1 Sum 2: The water in an electric kettle took 5 minutes to reach its boiling point when it is connected to 220 v supply. How long would it have taken if the supply voltage had fallen to 200 v. + Solution 2 - Close Solution 2 Sum 3: What is the resistance under normal working conditions of 240V electric lamp rated at 60 W ? If two such lamps are connected in series across a 240 mains supply, explain why each one appears less bright. + Solution 3 - Close Solution 3

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8. Hindi Dictation (IMLA) Writing Practice - तीन-तीन कठिन शब्दों का अभ्यास

This Hindi dictation video is tried to provide practice of hard Hindi words (तीन-तीन कठिन शब्दों का अभ्यास ). The dictation was created in set of three hards words. E.G three words are dictated at a time with a provision of time so that learner can write them. After that those words are written so that you may check and correct those. -These words are those type in which mistakes are done by many learner.